sample - Page 161 - Developer IT

Graphing new users by date with Seer

- by Danger Angell

I'd like to implement a rolling graph showing new users by day over the last 7 days using Seer. I've got Seer installed: http://www.idolhands.com/ruby-on-rails/gems-plugins-and-engines/graphing-for-ruby-on-rails-with-seer I'm struggling to get my brain around how to implement. I've got an array of the Users I want to plot: @users = User.all( :conditions = {:created_at = 7.days.ago..Time.zone.now}) Can't see the right way to implement the :data_method to roll them up by created_at date. Anyone done this or similar with Seer? Anyone smarter than me able to explain this after looking at the Seer sample page (linked above)?

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Freezing a dual-mode (GUI and console) application using cx_Freeze

- by Mridang Agarwalla

Hi, I've developed a Python application that runs both in the GUI mode and the console mode. If any arguments are specified, it runs in a console mode else it runs in the GUI mode. I've managed to freeze this using cx_Freeze. I had some problems hiding the black console window that would pop up with wxPython and so I modified my setup.py script like this: import sys from cx_Freeze import setup, Executable base = None if sys.platform == "win32": base = "Win32GUI" setup( name = "simple_PyQt4", version = "0.1", description = "Sample cx_Freeze PyQt4 script", executables = [Executable("PyQt4app.py", base = base)]) This works fine but now when I try to open up my console and run the executable from there, it doesn't output anything. I don't get any errors or messages so it seems that cx_Feeze is redirecting the stdout somewhere else. Is is possible to get it to work with both mode? Nothing similar to this seems to be documented anywhere. :( Thanks in advance. Mridang

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Mono Project: How to install Mono framework on Red Hat Linux which is compiled on centOS ?

- by funwithcoding

We have Red Hat Enterprise Linux servers at work place. However we dont have Red Hat Linux desktops. So I used CentOS 5.4 to compile the Mono sources and generated the Mono framework for CentOS and tested with some sample codes and I am satisfied. I want to transfer this compiled framework to Red Hat Enterprise Linux 5. How Can I do that? Do I have to compile the Mono framework statically or do I have to copy the linked libraries as well? I am not familiar with linux much. Any help is highly appreciated.

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Convert byte array to wav file

- by Eyla

I'm trying to play a wav sound that stored in byte array called bytes. I know that I should convert the byte array to wav file and save it in my local drive then called the saved file but I was not able to convert the byte array to wav file. please help me to give sample code to convert byte arrary of wav sound to wav file. here is my code: protected void Button1_Click(object sender, EventArgs e) { byte[] bytes = GetbyteArray(); //missing code to convert the byte array to wav file ..................... System.Media.SoundPlayer myPlayer = new System.Media.SoundPlayer(myfile); myPlayer.Stream = new MemoryStream(); myPlayer.Play(); }

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Bounce Email handling with PHP??

- by mcfadder_09

I am really new to this (not new to php). Here is my scenario: I have 2 emails accounts. [email protected] and [email protected]. I want to send email to all my users with [email protected] but then "reply to" [email protected] (until here, my php script can handle it). When, the email cant be sent, it sent to [email protected], the error message could be 553 (non existent email ...) etc. My question is: How do I direct all those bounce emails (couldn't sent emails) to [email protected] through a handling script to check for the bounce error codes? What programming language should I be for the "handling script"? What would the "handling script" looks like? Can give a sample? OR:(Big Question) What are the procedures I should follow to handle the bounce email ??

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Custom Designers deserialize SplitContainer problem

- by Hamid

Hi I just using this link http://msdn.microsoft.com/en-us/magazine/cc163634.aspx for extent custom designer. I using BasicDesignerLoader type because need xml data for save in db. all thing work properly. I try add SplitContainer to form and then serialize form, it's ok, but when try deserialize it, items that contains in SplitContainer Panel, failed. after i check it see not implement ReadRefrence method (only wrote WriteReference method) How to implement it fast ? Note: After download sample from http://download.microsoft.com/download/f/2/7/f279e71e-efb0-4155-873d-5554a0608523/DesignerHosting.exe, you must add typeof(System.Windows.Forms.SplitContainer) to ToolboxXmlManager.cs(Line 13) in ToolBox project. Note2: Find (De)Serialize method in BasicHostLoader.cs at Loader Project Thanks in advanced

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I am getting an error when trying to use melt() on a dataframe containing Dates

- by Dan

I'd like to melt the dataframe so that in one column i have dates in a second i have username as the variable and finally the value. I'm getting this error: Error in as.Date.numeric(value) : 'origin' must be supplied and while I understand the error I'm not exactly sure how to get around it. A small sample of the data is: structure(list(created_at = structure(c(14007, 14008, 14009, 14010, 14011, 14012), class = "Date"), benjamin = c(16, 0, 0, 0, 0, 0), byron = c(0, 0, 0, 0, 0, 0), cameronc = c(0, 0, 0, 0, 0, 0), daniel = c(0, 0, 0, 0, 0, 0), djdiaz = c(0, 0, 0, 0, 0, 0), gene = c(16, 77, 64, 38, 72, 36), joel = c(0, 0, 0, 0, 0, 2), kerem = c(0, 0, 0, 0, 0, 0), sophia = c(0, 0, 0, 0, 0, 0), SuperMoonMan = c(0, 0, 0, 0, 0, 0)), .Names = c("created_at", "benjamin", "byron", "cameronc", "daniel", "djdiaz", "gene", "joel", "kerem", "sophia", "SuperMoonMan"), row.names = c(NA, 6L), class = c("cast_df", "data.frame")) Thanks for your help.

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3D Character/Model Creator

- by Click Ok

I'm in a project to create a 3d game using XNA/C#, and the game will use a lot of 3d characters. Looking at the current 3d games, in some they create near to hundreds of characters, what lead me to think that there are some good 3d character/model creator. To narrow the sample, the game will have characters like the game "Grand Chase". There are some good (and easy) character model creator for to use in XNA development? Free is better, of course, but I will get payed versions too. EDIT: Another question is about the movements of the characters. The movements like walk, jump, sit, etc are "created" by the "character creator tool" or by the game?

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Java Junit testing problem

- by agazerboy

Hi All, I am using Junit 4. My whole program is working fine. I am trying to write a test case. But there is one error... here is very basic sample test public class di extends TestCase{ private static Records testRec; public void testAbc() { Assert.assertTrue( "There should be some thing.", di.testRec.getEmployee() > 0); } } and when i run this it give me error that fName can not be null if i use super and do like this public TestAgnes() { super("testAbc"); } it work all fine. It wasn't this before with JUnit 3.X am I doing wrong or they changed it :( Sorry if I am not clear Is there any way to executre test without super? or calling functions etc. ?

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Wrong IO actions order using putStr and getLine

- by QWRp

I have a code : main = do putStr "Test input : " content <- getLine putStrLn content And when I run it (with runhaskell) or compile it (ghc 6.10.4) result is like this: asd Test input : asd I'm new to haskell and in my opinion printing should be first. Am I right? In code sample on http://learnyouahaskell.com/ which used putStr then getLine presented output is different than mine (IMHO correct). When I use putStrLn program works as expected (print then prompt and print). Is it a bug in ghc, or it is the way that it should work?

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Language of variable names? (native foreign language speakers)

- by Jj

We are a spanish speaking development team, we code in django and we all are pretty fluent in english, as all documentation, sample code, APIs, etc come in english. On our last project we chose to name all the variables, class names, modules, files and such in english, even though the whole application was in spanish, we kept a strings file where all our spanish was stored. We did this because it seemed more natural to read the whole code in one language, since keywords, constructs and dependencies have names in english. On new projects we are starting, we are having second thoughts about other teams mantaining our code or just having 3rd parties having to deal with templates or context in spanish. Do you know of any best practice on this matter?

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How do I handle dojo datagrid cell updates so I can post them back automatically to the server?

- by Raj

I am using dojo datagrid to display my data. When the end user edit the cell values it should be updated in the server using ajax calls(when the focus goes out of the cell). Else, I should have a Edit & update/cancel buttons for each row to handle the same feature. But I don know how to place edit & update buttons inside the grid and capture their events. By default dojo updates only local the store value(client side). how can I save the updated cell values into the server? do we need to write any override methods to do so?? I am new to dojo. Any detailed explanation or sample codes would be much appreciated. Could anyone lend a hand to solve this issue?? Thank you Regards, Raj

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Emacs: annoying Flymake dialog box.

- by baol

Hello I have the following lines in my ~/.emacs.d/init.el (custom-set-variables '(flymake-allowed-file-name-masks (quote ( ("\\.cc\\'" flymake-simple-make-init) ("\\.cpp\\'" flymake-simple-make-init))))) (add-hook 'find-file-hook 'flymake-find-file-hook) When I open a cc/cpp file that has a Makefile with the following content in the same folder I get proper on-the-fly compilation and error reporting (Flymake will check the syntax and report errors and warnings during code editing) .PHONY: check-syntax check-syntax: $(CXX) -Wall -Wextra -pedantic -fsyntax-only $(CHK_SOURCES) The problem is that when I open a .cc file that has no corresponding Makefile i get an annoying dialog box that warns me about flymake being disabled for every file opened. Is there some hook I can use to disable that warning? Can you provide sample elisp code and explanation on how you found the proper hook?

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How can I create a JTable where the first column is always in the JScrollPane viewport?

- by voodoogiant

What's the best way to set up a table in a JScrollPane such that the first column is always on the screen in the same position regardless of horizontal scrolling and overlaps columns that pass underneath? When the scrollbar is at the farthest left, the columns look normal, but as the user scrolls to the right, the secondary columns (2 and on) move underneath the first until the last column appears on the far right of the viewport? I found a sample taken from Eckstein's "Java Swing" book that sort of does this, but it doesn't allow resizing of the first column. I was thinking of some scheme where one JPanel held a horizontal struct and a table holding the secondary columns and another JPanel which floated over them (fixed regardless of scrolling). The struct would be to keep the viewport range constant as the first column floated around. Ideally I could do it with two tables using the same model, but I'm not sure if the whole idea is a naive solution.

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SQL Query - Count column values separately

- by user575535

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Please help. Creating threads and wait till finsh

- by Raj Aththanayake

Hi I have two method calls that I want to call using two threads. Then I want them to wait till method executions get completed before continuing. My sample solution is something like below. public static void Main() { Console.WriteLine("Main thread starting."); String[] strThreads = new String[] { "one", "two" }; String ctemp = string.Empty; foreach (String c in strThreads) { ctemp = c; Thread thread = new Thread(delegate() { MethodCall(ctemp); }); thread.Start(); thread.Join(); } Console.WriteLine("Main thread ending."); Console.Read(); } public static void MethodCalls(string number) { Console.WriteLine("Method call " + number); } Is this will do the job? Or is there another better way to do the same thing?

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Most used .NET namespace

- by Michael Prewecki

What is your most commonly used namespace in .NET. I know it will vary greatly based upon the types of projects you develop but the stack overflow audience should provide a fairly decent sample set for the types of .NET projects being developed. I'm simply interest in the name of the namespace (one namespace per answer and no one person should have more than one answer, if someone else has the same answer as you then just upvote their answer). Try to be as specific as possible (so answering System, isn't helpful). I'm after this information to help new developers focus their attention on the most common .NET namespaces...there are after all thousands of them! To start off mine is almost certainly System.Collections.Generic, I use lists of things everywhere.

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Run a JGNAT program?

- by anta40

I just installed JGNAT on Windows (gnat-gpl-2010-jvm-bin.exe) This is a sample code hello.adb from the included manual: with Ada.Text_IO; use Ada.Text_IO; procedure Hello is begin Put_Line ("Hello GNAT for the JVM."); end Hello; First, compile it: jvm-gnatmake hello.adb jvm-gnatcompile -c hello.adb jvm-gnatbind -x hello.ali jvm-gnatlink hello.ali Looks fine. So let's run it: java hello Exception in thread "main" java.lang.NoClassDefFoundError: jgnat/adalib/GNAT_libc at hello.main(hello.adb) Caused by: java.lang.ClassNotFoundException: jgnat.adalib.GNAT_libc at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 1 more Any idea why?

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updating dojo grid cell values in the server

- by Raj

I am using dojo datagrid to display my data. When the end user edit the cell values it should be updated in the server using ajax calls(when the focus goes out of the cell). Else, I should have a Edit & update/cancel buttons for each row to handle the same feature. But I don know how to place edit & update buttons inside the grid and capture their events. By default dojo updates only local the store value(client side). how can I save the updated cell values into the server? do we need to write any override methods to do so?? I am new to dojo. Any detailed explanation or sample codes would be much appreciated. Could anyone lend a hand to solve this issue?? Thank you Regards, Raj

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How to get all rows but specifc columns from a DataTable?

- by Oliver

Currently i am having some problems with getting some data out of a DataTable by selecting all rows, but only some columns. To be a little more descriptive here is a little example: Sample Data | ID | FirstName | LastName | Age | +----+-----------+----------+-----+ | 1 | Alice | Wannabe | 22 | | 2 | Bob | Consumer | 27 | | 3 | Carol | Detector | 25 | What i have So what we got from our GUI is a IEnumerable<DataColumn> selectedColumns and there we'll find two elements (FirstName and LastName). Now i need some result which contains all rows, but only the above two columns (or any other list of selected columns). So far i already used LINQ on several one dimensional objects, but this two dimensional object gives me a little headache. // The hard-coded way Table.AsEnumerable().Select(row => new { FirstName = row[1], LastName = row[2] }); // The flexible way Table.AsEnumerable().Select(row => row ???) But how can i now say, which columns from row should be selected by using my selectedColumns?

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python search replace using wildcards

- by tom smith

hi somewhat confused.. but trying to do a search/repace using wildcards if i have something like: <blah.... ssf ff> <bl.... ssf dfggg ff> <b.... ssf ghhjj fhf> and i want to replace all of the above strings with say, <hh >t any thoughts/comments on how this can be accomplished? thanks update (thanks for the comments!) i'm missing something... my initial sample text are: Soo Choi</span>LONGEDITBOX">Apryl Berney Soo Choi</span>LONGEDITBOX">Joel Franks Joel Franks</span>GEDITBOX">Alexander Yamato and i'm trying to get Soo Choi foo Apryl Berney Soo Choi foo Joel Franks Joel Franks foo Alexander Yamato i've tried derivations of name=re.sub("</s[^>]*\">"," foo ",name) but i'm missing something... thoughts... thanks

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Image animation over CGContextDrawPDFPage

- by BittenApple

I have a pdf page displayed with CGContextDrawPDFPage in QuartzDemo sample application. I want to keep this page shown and have an image slide in from top over this page, just as it can be seen in the iBooks application. It's a book, the sliding image is a bookmark that slides in when you are about to close the book. I added this code by DyingCactus (hint: im a newbie to obj c and iphone dev) as follows: In QuartzViewController.m, the animation starts to show but the view slides away before the animation is finished, in fact I think the animation goes on while the view is sliding away. -(void)viewWillDisappear:(BOOL)animated { [self.quartzView setFrame:CGRectMake(150, -200, 100, 200)]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0]; [self.quartzView setFrame:CGRectMake(150, 0, 100, 200)]; [UIView commitAnimations]; } How can I keep the view visible and finish the animation before view disappears?

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Is this an F# quotations bug?

- by ControlFlow

[<ReflectedDefinition>] let rec x = (fun() -> x + "abc") () The sample code with the recursive value above produces the following F# compiler error: error FS0432: [<ReflectedDefinition>] terms cannot contain uses of the prefix splice operator '%' I can't see any slicing operator usage in the code above, looks like a bug... :) Looks like this is the problem with the quotation via ReflectedDefinitionAttribute only, normal quotation works well: let quotation = <@ let rec x = (fun() -> x + "abc") () in x @> produces expected result with the hidden Lazy.create and Lazy.force usages: val quotation : Quotations.Expr<string> = LetRecursive ([(x, Lambda (unitVar, Application (Lambda (unitVar0, Call (None, String op_Addition[String,String,String](String, String), [Call (None, String Force[String](Lazy`1[System.String]), [x]), Value ("abc")])), Value (<null>)))), (x, Call (None, Lazy`1[String] Create[String](FSharpFunc`2[Unit,String]), [x])), (x, Call (None, String Force[String](Lazy`1[String]), [x]))], x) So the question is: is this an F# compiler bug or not?

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how to use found_rows in oracle package to avoid two queries

- by Omnipresent

I made a package which I can use like this: select * from table(my_package.my_function(99, 'something, something2', 1, 50)) I make use of the package in a stored procedure. Sample stored procedure looks like: insert into something values(...) from (select * from table(my_package.my_function(99, 'something, something2', 1, 50))) a other_table b where b.something1 = a.something1; open cv_1 for select count(*) from table(my_package.my_function(99, 'something, something2', 1, 50)) So I am calling the same package twice. first time to match records with other tables and other stuff and second time to get the count. Is there a way to get the count first time around and put it into a variable and second time around I just pick that variable rather than calling the whole query again? Hope it makes sense.

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Test azure application in dev fabric.

- by kiran826

Hi, I have a created a sample web role application using cloud service. Before hosting my application in cloud, i want to test the application in dev fabric. I am sure that when we run the application from VS, it creates an environment that simulates the cloud. But if i want to give my application for testing to QA, do i still need to give my source to them and run the application from VS under dev fabric or do we any other way in running my deployed package under dev fabric. In a line my question is, How do i run my packaged azure application under dev fabric before hosting in Cloud? Can anyone having an idea, please share me some information? Thanks, Kiran

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- by Danger Angell

- by Mridang Agarwalla

- by funwithcoding

- by Eyla

- by mcfadder_09

- by Hamid

- by Dan

- by Click Ok

- by agazerboy

- by QWRp

- by Jj

- by Raj

- by baol

- by voodoogiant

- by user575535

- by Raj Aththanayake

- by Michael Prewecki

- by anta40

- by Raj

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